function __spack_require__(mod) {
    var cache;
    return (function() {
        if (cache) {
            return cache;
        }
        var module = {
            exports: {
            }
        };
        mod(module, module.exports);
        cache = module.exports;
        return cache;
    })();
}
function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
    try {
        var info = gen[key](arg);
        var value = info.value;
    } catch (error) {
        reject(error);
        return;
    }
    if (info.done) {
        resolve(value);
    } else {
        Promise.resolve(value).then(_next, _throw);
    }
}
function _asyncToGenerator(fn) {
    return function() {
        var self = this, args = arguments;
        return new Promise(function(resolve, reject) {
            var gen = fn.apply(self, args);
            function _next(value) {
                asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value);
            }
            function _throw(err) {
                asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err);
            }
            _next(undefined);
        });
    };
}
var load = __spack_require__.bind(void 0, function(module, exports) {
    /**
 * Copyright (c) 2014-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */ var runtime = function(exports1) {
        var Op = Object.prototype;
        var hasOwn = Op.hasOwnProperty;
        var undefined; // More compressible than void 0.
        var $Symbol = typeof Symbol === "function" ? Symbol : {
        };
        var iteratorSymbol = $Symbol.iterator || "@@iterator";
        var asyncIteratorSymbol = $Symbol.asyncIterator || "@@asyncIterator";
        var toStringTagSymbol = $Symbol.toStringTag || "@@toStringTag";
        function define(obj, key, value) {
            Object.defineProperty(obj, key, {
                value: value,
                enumerable: true,
                configurable: true,
                writable: true
            });
            return obj[key];
        }
        try {
            // IE 8 has a broken Object.defineProperty that only works on DOM objects.
            define({
            }, "");
        } catch (err) {
            define = function(obj, key, value) {
                return obj[key] = value;
            };
        }
        function wrap(innerFn, outerFn, self, tryLocsList) {
            // If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator.
            var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;
            var generator = Object.create(protoGenerator.prototype);
            var context = new Context(tryLocsList || []);
            // The ._invoke method unifies the implementations of the .next,
            // .throw, and .return methods.
            generator._invoke = makeInvokeMethod(innerFn, self, context);
            return generator;
        }
        exports1.wrap = wrap;
        // Try/catch helper to minimize deoptimizations. Returns a completion
        // record like context.tryEntries[i].completion. This interface could
        // have been (and was previously) designed to take a closure to be
        // invoked without arguments, but in all the cases we care about we
        // already have an existing method we want to call, so there's no need
        // to create a new function object. We can even get away with assuming
        // the method takes exactly one argument, since that happens to be true
        // in every case, so we don't have to touch the arguments object. The
        // only additional allocation required is the completion record, which
        // has a stable shape and so hopefully should be cheap to allocate.
        function tryCatch(fn, obj, arg) {
            try {
                return {
                    type: "normal",
                    arg: fn.call(obj, arg)
                };
            } catch (err) {
                return {
                    type: "throw",
                    arg: err
                };
            }
        }
        var GenStateSuspendedStart = "suspendedStart";
        var GenStateSuspendedYield = "suspendedYield";
        var GenStateExecuting = "executing";
        var GenStateCompleted = "completed";
        // Returning this object from the innerFn has the same effect as
        // breaking out of the dispatch switch statement.
        var ContinueSentinel = {
        };
        // Dummy constructor functions that we use as the .constructor and
        // .constructor.prototype properties for functions that return Generator
        // objects. For full spec compliance, you may wish to configure your
        // minifier not to mangle the names of these two functions.
        function Generator() {
        }
        function GeneratorFunction() {
        }
        function GeneratorFunctionPrototype() {
        }
        // This is a polyfill for %IteratorPrototype% for environments that
        // don't natively support it.
        var IteratorPrototype = {
        };
        IteratorPrototype[iteratorSymbol] = function() {
            return this;
        };
        var getProto = Object.getPrototypeOf;
        var NativeIteratorPrototype = getProto && getProto(getProto(values([])));
        if (NativeIteratorPrototype && NativeIteratorPrototype !== Op && hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) // This environment has a native %IteratorPrototype%; use it instead
        // of the polyfill.
        IteratorPrototype = NativeIteratorPrototype;
        var Gp = GeneratorFunctionPrototype.prototype = Generator.prototype = Object.create(IteratorPrototype);
        GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;
        GeneratorFunctionPrototype.constructor = GeneratorFunction;
        GeneratorFunction.displayName = define(GeneratorFunctionPrototype, toStringTagSymbol, "GeneratorFunction");
        // Helper for defining the .next, .throw, and .return methods of the
        // Iterator interface in terms of a single ._invoke method.
        function defineIteratorMethods(prototype) {
            [
                "next",
                "throw",
                "return"
            ].forEach(function(method) {
                define(prototype, method, function(arg) {
                    return this._invoke(method, arg);
                });
            });
        }
        exports1.isGeneratorFunction = function(genFun) {
            var ctor = typeof genFun === "function" && genFun.constructor;
            return ctor ? ctor === GeneratorFunction || // For the native GeneratorFunction constructor, the best we can
            // do is to check its .name property.
            (ctor.displayName || ctor.name) === "GeneratorFunction" : false;
        };
        exports1.mark = function(genFun) {
            if (Object.setPrototypeOf) Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);
            else {
                genFun.__proto__ = GeneratorFunctionPrototype;
                define(genFun, toStringTagSymbol, "GeneratorFunction");
            }
            genFun.prototype = Object.create(Gp);
            return genFun;
        };
        // Within the body of any async function, `await x` is transformed to
        // `yield regeneratorRuntime.awrap(x)`, so that the runtime can test
        // `hasOwn.call(value, "__await")` to determine if the yielded value is
        // meant to be awaited.
        exports1.awrap = function(arg) {
            return {
                __await: arg
            };
        };
        function AsyncIterator(generator, PromiseImpl) {
            function invoke(method, arg, resolve, reject) {
                var record = tryCatch(generator[method], generator, arg);
                if (record.type === "throw") reject(record.arg);
                else {
                    var result = record.arg;
                    var value = result.value;
                    if (value && typeof value === "object" && hasOwn.call(value, "__await")) return PromiseImpl.resolve(value.__await).then(function(value1) {
                        invoke("next", value1, resolve, reject);
                    }, function(err) {
                        invoke("throw", err, resolve, reject);
                    });
                    return PromiseImpl.resolve(value).then(function(unwrapped) {
                        // When a yielded Promise is resolved, its final value becomes
                        // the .value of the Promise<{value,done}> result for the
                        // current iteration.
                        result.value = unwrapped;
                        resolve(result);
                    }, function(error) {
                        // If a rejected Promise was yielded, throw the rejection back
                        // into the async generator function so it can be handled there.
                        return invoke("throw", error, resolve, reject);
                    });
                }
            }
            var previousPromise;
            function enqueue(method, arg) {
                function callInvokeWithMethodAndArg() {
                    return new PromiseImpl(function(resolve, reject) {
                        invoke(method, arg, resolve, reject);
                    });
                }
                return previousPromise = // If enqueue has been called before, then we want to wait until
                // all previous Promises have been resolved before calling invoke,
                // so that results are always delivered in the correct order. If
                // enqueue has not been called before, then it is important to
                // call invoke immediately, without waiting on a callback to fire,
                // so that the async generator function has the opportunity to do
                // any necessary setup in a predictable way. This predictability
                // is why the Promise constructor synchronously invokes its
                // executor callback, and why async functions synchronously
                // execute code before the first await. Since we implement simple
                // async functions in terms of async generators, it is especially
                // important to get this right, even though it requires care.
                previousPromise ? previousPromise.then(callInvokeWithMethodAndArg, // Avoid propagating failures to Promises returned by later
                // invocations of the iterator.
                callInvokeWithMethodAndArg) : callInvokeWithMethodAndArg();
            }
            // Define the unified helper method that is used to implement .next,
            // .throw, and .return (see defineIteratorMethods).
            this._invoke = enqueue;
        }
        defineIteratorMethods(AsyncIterator.prototype);
        AsyncIterator.prototype[asyncIteratorSymbol] = function() {
            return this;
        };
        exports1.AsyncIterator = AsyncIterator;
        // Note that simple async functions are implemented on top of
        // AsyncIterator objects; they just return a Promise for the value of
        // the final result produced by the iterator.
        exports1.async = function(innerFn, outerFn, self, tryLocsList, PromiseImpl) {
            if (PromiseImpl === void 0) PromiseImpl = Promise;
            var iter = new AsyncIterator(wrap(innerFn, outerFn, self, tryLocsList), PromiseImpl);
            return exports1.isGeneratorFunction(outerFn) ? iter : iter.next().then(function(result) {
                return result.done ? result.value : iter.next();
            });
        };
        function makeInvokeMethod(innerFn, self, context) {
            var state = GenStateSuspendedStart;
            return function invoke(method, arg) {
                if (state === GenStateExecuting) throw new Error("Generator is already running");
                if (state === GenStateCompleted) {
                    if (method === "throw") throw arg;
                    // Be forgiving, per 25.3.3.3.3 of the spec:
                    // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume
                    return doneResult();
                }
                context.method = method;
                context.arg = arg;
                while(true){
                    var delegate = context.delegate;
                    if (delegate) {
                        var delegateResult = maybeInvokeDelegate(delegate, context);
                        if (delegateResult) {
                            if (delegateResult === ContinueSentinel) continue;
                            return delegateResult;
                        }
                    }
                    if (context.method === "next") // Setting context._sent for legacy support of Babel's
                    // function.sent implementation.
                    context.sent = context._sent = context.arg;
                    else if (context.method === "throw") {
                        if (state === GenStateSuspendedStart) {
                            state = GenStateCompleted;
                            throw context.arg;
                        }
                        context.dispatchException(context.arg);
                    } else if (context.method === "return") context.abrupt("return", context.arg);
                    state = GenStateExecuting;
                    var record = tryCatch(innerFn, self, context);
                    if (record.type === "normal") {
                        // If an exception is thrown from innerFn, we leave state ===
                        // GenStateExecuting and loop back for another invocation.
                        state = context.done ? GenStateCompleted : GenStateSuspendedYield;
                        if (record.arg === ContinueSentinel) continue;
                        return {
                            value: record.arg,
                            done: context.done
                        };
                    } else if (record.type === "throw") {
                        state = GenStateCompleted;
                        // Dispatch the exception by looping back around to the
                        // context.dispatchException(context.arg) call above.
                        context.method = "throw";
                        context.arg = record.arg;
                    }
                }
            };
        }
        // Call delegate.iterator[context.method](context.arg) and handle the
        // result, either by returning a { value, done } result from the
        // delegate iterator, or by modifying context.method and context.arg,
        // setting context.delegate to null, and returning the ContinueSentinel.
        function maybeInvokeDelegate(delegate, context) {
            var method = delegate.iterator[context.method];
            if (method === undefined) {
                // A .throw or .return when the delegate iterator has no .throw
                // method always terminates the yield* loop.
                context.delegate = null;
                if (context.method === "throw") {
                    // Note: ["return"] must be used for ES3 parsing compatibility.
                    if (delegate.iterator["return"]) {
                        // If the delegate iterator has a return method, give it a
                        // chance to clean up.
                        context.method = "return";
                        context.arg = undefined;
                        maybeInvokeDelegate(delegate, context);
                        if (context.method === "throw") // If maybeInvokeDelegate(context) changed context.method from
                        // "return" to "throw", let that override the TypeError below.
                        return ContinueSentinel;
                    }
                    context.method = "throw";
                    context.arg = new TypeError("The iterator does not provide a 'throw' method");
                }
                return ContinueSentinel;
            }
            var record = tryCatch(method, delegate.iterator, context.arg);
            if (record.type === "throw") {
                context.method = "throw";
                context.arg = record.arg;
                context.delegate = null;
                return ContinueSentinel;
            }
            var info = record.arg;
            if (!info) {
                context.method = "throw";
                context.arg = new TypeError("iterator result is not an object");
                context.delegate = null;
                return ContinueSentinel;
            }
            if (info.done) {
                // Assign the result of the finished delegate to the temporary
                // variable specified by delegate.resultName (see delegateYield).
                context[delegate.resultName] = info.value;
                // Resume execution at the desired location (see delegateYield).
                context.next = delegate.nextLoc;
                // If context.method was "throw" but the delegate handled the
                // exception, let the outer generator proceed normally. If
                // context.method was "next", forget context.arg since it has been
                // "consumed" by the delegate iterator. If context.method was
                // "return", allow the original .return call to continue in the
                // outer generator.
                if (context.method !== "return") {
                    context.method = "next";
                    context.arg = undefined;
                }
            } else // Re-yield the result returned by the delegate method.
            return info;
            // The delegate iterator is finished, so forget it and continue with
            // the outer generator.
            context.delegate = null;
            return ContinueSentinel;
        }
        // Define Generator.prototype.{next,throw,return} in terms of the
        // unified ._invoke helper method.
        defineIteratorMethods(Gp);
        define(Gp, toStringTagSymbol, "Generator");
        // A Generator should always return itself as the iterator object when the
        // @@iterator function is called on it. Some browsers' implementations of the
        // iterator prototype chain incorrectly implement this, causing the Generator
        // object to not be returned from this call. This ensures that doesn't happen.
        // See https://github.com/facebook/regenerator/issues/274 for more details.
        Gp[iteratorSymbol] = function() {
            return this;
        };
        Gp.toString = function() {
            return "[object Generator]";
        };
        function pushTryEntry(locs) {
            var entry = {
                tryLoc: locs[0]
            };
            if (1 in locs) entry.catchLoc = locs[1];
            if (2 in locs) {
                entry.finallyLoc = locs[2];
                entry.afterLoc = locs[3];
            }
            this.tryEntries.push(entry);
        }
        function resetTryEntry(entry) {
            var record = entry.completion || {
            };
            record.type = "normal";
            delete record.arg;
            entry.completion = record;
        }
        function Context(tryLocsList) {
            // The root entry object (effectively a try statement without a catch
            // or a finally block) gives us a place to store values thrown from
            // locations where there is no enclosing try statement.
            this.tryEntries = [
                {
                    tryLoc: "root"
                }
            ];
            tryLocsList.forEach(pushTryEntry, this);
            this.reset(true);
        }
        exports1.keys = function(object) {
            var keys = [];
            for(var key in object)keys.push(key);
            keys.reverse();
            // Rather than returning an object with a next method, we keep
            // things simple and return the next function itself.
            return function next() {
                while(keys.length){
                    var key1 = keys.pop();
                    if (key1 in object) {
                        next.value = key1;
                        next.done = false;
                        return next;
                    }
                }
                // To avoid creating an additional object, we just hang the .value
                // and .done properties off the next function object itself. This
                // also ensures that the minifier will not anonymize the function.
                next.done = true;
                return next;
            };
        };
        function values(iterable) {
            if (iterable) {
                var iteratorMethod = iterable[iteratorSymbol];
                if (iteratorMethod) return iteratorMethod.call(iterable);
                if (typeof iterable.next === "function") return iterable;
                if (!isNaN(iterable.length)) {
                    var i = -1, next = function next1() {
                        while((++i) < iterable.length)if (hasOwn.call(iterable, i)) {
                            next.value = iterable[i];
                            next.done = false;
                            return next;
                        }
                        next.value = undefined;
                        next.done = true;
                        return next;
                    };
                    return next.next = next;
                }
            }
            // Return an iterator with no values.
            return {
                next: doneResult
            };
        }
        exports1.values = values;
        function doneResult() {
            return {
                value: undefined,
                done: true
            };
        }
        Context.prototype = {
            constructor: Context,
            reset: function(skipTempReset) {
                this.prev = 0;
                this.next = 0;
                // Resetting context._sent for legacy support of Babel's
                // function.sent implementation.
                this.sent = this._sent = undefined;
                this.done = false;
                this.delegate = null;
                this.method = "next";
                this.arg = undefined;
                this.tryEntries.forEach(resetTryEntry);
                if (!skipTempReset) for(var name in this)// Not sure about the optimal order of these conditions:
                if (name.charAt(0) === "t" && hasOwn.call(this, name) && !isNaN(+name.slice(1))) this[name] = undefined;
            },
            stop: function() {
                this.done = true;
                var rootEntry = this.tryEntries[0];
                var rootRecord = rootEntry.completion;
                if (rootRecord.type === "throw") throw rootRecord.arg;
                return this.rval;
            },
            dispatchException: function(exception) {
                if (this.done) throw exception;
                var context = this;
                function handle(loc, caught) {
                    record.type = "throw";
                    record.arg = exception;
                    context.next = loc;
                    if (caught) {
                        // If the dispatched exception was caught by a catch block,
                        // then let that catch block handle the exception normally.
                        context.method = "next";
                        context.arg = undefined;
                    }
                    return !!caught;
                }
                for(var i = this.tryEntries.length - 1; i >= 0; --i){
                    var entry = this.tryEntries[i];
                    var record = entry.completion;
                    if (entry.tryLoc === "root") // Exception thrown outside of any try block that could handle
                    // it, so set the completion value of the entire function to
                    // throw the exception.
                    return handle("end");
                    if (entry.tryLoc <= this.prev) {
                        var hasCatch = hasOwn.call(entry, "catchLoc");
                        var hasFinally = hasOwn.call(entry, "finallyLoc");
                        if (hasCatch && hasFinally) {
                            if (this.prev < entry.catchLoc) return handle(entry.catchLoc, true);
                            else if (this.prev < entry.finallyLoc) return handle(entry.finallyLoc);
                        } else if (hasCatch) {
                            if (this.prev < entry.catchLoc) return handle(entry.catchLoc, true);
                        } else if (hasFinally) {
                            if (this.prev < entry.finallyLoc) return handle(entry.finallyLoc);
                        } else throw new Error("try statement without catch or finally");
                    }
                }
            },
            abrupt: function(type, arg) {
                for(var i = this.tryEntries.length - 1; i >= 0; --i){
                    var entry = this.tryEntries[i];
                    if (entry.tryLoc <= this.prev && hasOwn.call(entry, "finallyLoc") && this.prev < entry.finallyLoc) {
                        var finallyEntry = entry;
                        break;
                    }
                }
                if (finallyEntry && (type === "break" || type === "continue") && finallyEntry.tryLoc <= arg && arg <= finallyEntry.finallyLoc) // Ignore the finally entry if control is not jumping to a
                // location outside the try/catch block.
                finallyEntry = null;
                var record = finallyEntry ? finallyEntry.completion : {
                };
                record.type = type;
                record.arg = arg;
                if (finallyEntry) {
                    this.method = "next";
                    this.next = finallyEntry.finallyLoc;
                    return ContinueSentinel;
                }
                return this.complete(record);
            },
            complete: function(record, afterLoc) {
                if (record.type === "throw") throw record.arg;
                if (record.type === "break" || record.type === "continue") this.next = record.arg;
                else if (record.type === "return") {
                    this.rval = this.arg = record.arg;
                    this.method = "return";
                    this.next = "end";
                } else if (record.type === "normal" && afterLoc) this.next = afterLoc;
                return ContinueSentinel;
            },
            finish: function(finallyLoc) {
                for(var i = this.tryEntries.length - 1; i >= 0; --i){
                    var entry = this.tryEntries[i];
                    if (entry.finallyLoc === finallyLoc) {
                        this.complete(entry.completion, entry.afterLoc);
                        resetTryEntry(entry);
                        return ContinueSentinel;
                    }
                }
            },
            "catch": function(tryLoc) {
                for(var i = this.tryEntries.length - 1; i >= 0; --i){
                    var entry = this.tryEntries[i];
                    if (entry.tryLoc === tryLoc) {
                        var record = entry.completion;
                        if (record.type === "throw") {
                            var thrown = record.arg;
                            resetTryEntry(entry);
                        }
                        return thrown;
                    }
                }
                // The context.catch method must only be called with a location
                // argument that corresponds to a known catch block.
                throw new Error("illegal catch attempt");
            },
            delegateYield: function(iterable, resultName, nextLoc) {
                this.delegate = {
                    iterator: values(iterable),
                    resultName: resultName,
                    nextLoc: nextLoc
                };
                if (this.method === "next") // Deliberately forget the last sent value so that we don't
                // accidentally pass it on to the delegate.
                this.arg = undefined;
                return ContinueSentinel;
            }
        };
        // Regardless of whether this script is executing as a CommonJS module
        // or not, return the runtime object so that we can declare the variable
        // regeneratorRuntime in the outer scope, which allows this module to be
        // injected easily by `bin/regenerator --include-runtime script.js`.
        return exports1;
    }(// If this script is executing as a CommonJS module, use module.exports
    // as the regeneratorRuntime namespace. Otherwise create a new empty
    // object. Either way, the resulting object will be used to initialize
    // the regeneratorRuntime variable at the top of this file.
    typeof module === "object" ? module.exports : {
    });
    try {
        regeneratorRuntime = runtime;
    } catch (accidentalStrictMode) {
        // This module should not be running in strict mode, so the above
        // assignment should always work unless something is misconfigured. Just
        // in case runtime.js accidentally runs in strict mode, we can escape
        // strict mode using a global Function call. This could conceivably fail
        // if a Content Security Policy forbids using Function, but in that case
        // the proper solution is to fix the accidental strict mode problem. If
        // you've misconfigured your bundler to force strict mode and applied a
        // CSP to forbid Function, and you're not willing to fix either of those
        // problems, please detail your unique predicament in a GitHub issue.
        Function("r", "regeneratorRuntime = r")(runtime);
    }
});
var regeneratorRuntime = load();
function _foo() {
    _foo = _asyncToGenerator(regeneratorRuntime.mark(function _callee() {
        return regeneratorRuntime.wrap(function _callee$(_ctx) {
            while(1)switch(_ctx.prev = _ctx.next){
                case 0:
                case "end":
                    return _ctx.stop();
            }
        }, _callee);
    }));
    return _foo.apply(this, arguments);
}
function foo() {
    return _foo.apply(this, arguments);
}
foo();
